This game mode is pretty well tought out.
However, anyone I talk to says it is too much moba or too many NPCs which I agree.
Killing the NPCs is very quick and doesn’t require any skill; protecting them is not possible.
To me it seems Anet tried to add as many things to it as they could think of but IHMO it would be better without the guards, doorbreaker and archers. The heroes and the lord room are cool.
This of course needs some replacement(like environmental weapons or some tool to destroy gates that replaces ur weapon skills) or instead of removing the npc entirely make them invulnerable to player damage. This way only trebs could help taking out NPCs and stopping someone from trebbing is a viable notion unlike stopping someone cleaving down the npcs from melee and then running off.
Running the supply back and forth also seems lackluster to me so the supplies could have an immediate NPC summoning effect. As soon as you pick a supply up you can choose with an instant skill what to summon. This of course would require somewhat longer reloading times for the supply stocks.
This game mode got a lot better than originally, good work!